You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
825 B
35 lines
825 B
package trace
|
|
|
|
import (
|
|
"testing"
|
|
)
|
|
|
|
func TestProbabilitySampling(t *testing.T) {
|
|
sampler := newSampler(0.001)
|
|
t.Run("test one operationName", func(t *testing.T) {
|
|
sampled, probability := sampler.IsSampled(0, "test123")
|
|
if !sampled || probability != 1 {
|
|
t.Errorf("expect sampled and probability == 1 get: %v %f", sampled, probability)
|
|
}
|
|
})
|
|
t.Run("test probability", func(t *testing.T) {
|
|
sampler.IsSampled(0, "test_opt_2")
|
|
count := 0
|
|
for i := 0; i < 100000; i++ {
|
|
sampled, _ := sampler.IsSampled(0, "test_opt_2")
|
|
if sampled {
|
|
count++
|
|
}
|
|
}
|
|
if count < 60 || count > 120 {
|
|
t.Errorf("expect count between 60~120 get %d", count)
|
|
}
|
|
})
|
|
}
|
|
|
|
func BenchmarkProbabilitySampling(b *testing.B) {
|
|
sampler := newSampler(0.001)
|
|
for i := 0; i < b.N; i++ {
|
|
sampler.IsSampled(0, "test_opt_xxx")
|
|
}
|
|
}
|
|
|